Improvement in compositions for preserving wood, coating ships  bottoms



- terioration.

UNITED STATES PATENT OFFICE.

GUILLAUME A. VIVHJN AND PAUL O. VIVIEN, OF HONFLETIR, FRANCE.

IMPROVEMENT IN COMPOSITIONS FOR PRESERVING WOOD, COATING SHIPS BOTTOMS, Nc.

Specification forming part of- Letters Patent No. 123,801, dated February 20, 1872.

The nature of this invention consists in ing sulphide of carbon with the resin known as colophony.

To prepare this composition, take, say, about sixty parts of sulphide of carbon and forty parts of colophony. Then mix the wholethat is to say, the two parts together, at three diiferent times-and the affinity of the two bodies is perfect; from which results the followingformnla: OS O=GO SO O H O 'which forms a liquid product, replacing with advantage all the compositions employed hitherto for the same purposes? This preparation is used with advantage upon wood or metal, parts of which are in water or in the ground, as well as to coat damp buildings before papering or painting.

Our composition is particularly applicable for coating ships bottoms, Whether of wood or iron, preserving them for an indefinite period; it may even be applied with advantage upon copper or zinc sheathing.

Our composition may be applied to metals, either before or after they are finished for delivery to consumption, or in preparing them for the manufacture for which they are intended; it is only requisite to coat them with one or two layers of the composition, and they may then, with impunity, be left exposed to damp or in water without fear of rust or de- The preceding remarks apply equally to looking-glasses, pictures, and all articles liable to injury from damp. No looking-glass will lose its silvering, if, before applyingthe blind-frame, the silvering be coated with a layer of our composition.

It is the same for wood as for metals. It is only necessary to coat them with one or two layers, and they are instantly preserved, not only against any possible decay,-but further, from becoming worm-eaten.

For buildings, whether of stone, brick, or plaster, all that is required to render them healthy is to apply two coats of our preparation upon the damp places, and neither paper or painting, subsequently applied, will be injured by damp or saltpetre.

Railway engineers will find great economy in the application of this composition to wooden railway sleepers.

We have arrived at these Various results only after numerous experiments and continuous research; and it will be evident that we cannot here enumerate all the articles or products which may be preserved by means of our composition.

We do not limit ourselves to any exact proportions of the components of our preparation. The proportions above given are only approximative, and will vary with the quality of the ingredients, and other considerations.

G. A. VIVIEN.v P. O. VIVIEN. Witnesses:

J. SOUDAIN, E. DUVAL. 

